Indicator mechanism



0. H. AND A. F. PIEPERAJ INDICATOR MECHANISM.

APPLICATION FILED DEC-27, I9I5- 1,328,895. Patented Jan. 27,1920.

13. PIEPER, OE RQCHESTER, NEW YORK.

OSCAR I'I. PIEPER AND ALPEYONS INDICA 01 3 MECHANISM.

ncense.

Application filed December 2'2, 1215.

To all whom it may concern:

Be it known that we, OsoAR H. Pinrnn and Anrrronsn F. Pmrnn, ofRochester, in the count of Monroe and State of New York, have inventedcertain new and useful Imrovements in Indicator Mechanisms; and we dohereby declare the following to be a full, clear, and exact descriptionof the same, reference being .had to the accompanying drawings, forminga part of this specification, and to th reference-numerals markedthereon.

Our invention has for its object to provide a novel method of mountingan indicator mechanism, and has reference more particularly to thearrangement of a fluid pressure indicator with reference to a panelboard or other support so that the bulk of the device, that is to say,the operating or controlling mechanism may be disposed upon the back orrear side of the support, while the indicator together with theindicating dial and coiiperating parts may be arranged upon the front ofthe support, thus eliminating from the front surface of the panel anyunnecessary or large projecting parts such as when the entire mechanismis arranged upon one side. A further purpose of the improvement is toafford a simple arrangement for carrying out the general objects setforth, and so arranging and combining the different portions of thestructure as to make it possible to readily assemble them in operativerelation upon a support or to remove the mechanism when this becomesdesirable, and at the same time, afiord rigid retaining means for theindicator. To these and other ends the invention consists in certainimprovements and combinations of parts all as will be hereinafter morefully described, the novel features being pointed out in the claims atthe end of the specification.

In the drawings:

Figure 1 is a plan view showing the application of the invention to ausual type of pressure indicator, with the panel or support broken away;

Fig. 2 is a similar view with parts re moved;

Fig. 3 is a vertical sectional view taken transversely, and

Fig. 4c is a sectional view on line L -4 of Fig. 3.

Similar reference numerals throughout the several views indicate thesame parts.

Specification of Letters Patent.

formed around the edge of the latter.

Patented Jan. 27, 1920.

seen n cases.

In the arrangement. which we have shown 1 indicates a supporting memberor wall which may be in the form of a panel constituting part of acontrolling mechanism, in connection with which it is desirable toafford an indication of pressure within" a system, and without disposingall of the operating parts for the indicating mechanism upon the frontof the panel. With this in view, we employ a housing 2 carrying theoperating mechanism and supportedon the back of the panel 1 by means ofbolts 3 which engage a plat 4: on the front of the panel, through whichthey pass, and having threaded extremities engaging threaded openings inthe base of the housing 2. The controlling mechanism includes anexpansible member 5 connected with an air passage 6 which terminates ina connection 7 to which an air line may be attached. The expansiblemember 5 is operatively associated with a gear segment 8 which engages apinion 9 on the arbor 10 and since the operative connection between thefluid expansible member and the arbor 10 form no part of the presentinvention, it is unnecessary to describe these in any greater detailthan above.

The arbor 10 is located in an opening 11 in the panel, extending beyondthe opposite surfaces of the panel and having the pinion 9 alreadydescribed, located at its inner eX- tremity. The outer or opposite endof the arbor 10 carries an indicator or hand 12 fixed thereon andcooperating with an indicating dial 13 which is located adjacent theaforementioned plate 4: and within the flange 1d 15 is a crystalsupporting ring bearing against the crystal 16 which is retained inplace by the threaded ring 17 engaging a threaded portion on the edge ofthe flange 14. The ring 15 rests partly on the flange 14: and partly onthe peripheral edge of the dial 13 thus serving to hold the latterfirmly against the plate a. To arbor 10 is inserted through the opening11 to position the housing 2 which is then secured in place by the bolts3. The dial plate 13 is next arranged over the plate 4:, after which theindicator 12 may be attached to the arbor, and the crystal and itscooperating parts can thereafter be secured in place.

The structure which we have described herein affords an extremely simpleand unique arrangement that is especially efi'ecassemble the structurethe.

embodiment 01 tive in the relation described. The cost of manufacturingand the ditliculty in assembling is no greater than with theordinarytype of indicating nechanisni. While the application discloses a more orless specific the improvement it will be understood that the inventionis intended to cover any arrangement in Which is contemplatedpositioning an indicating member upon one side of a panel or support andopcrating it from mechanism located on the opposite side of the panel,as Well as the particular arrangement described.

We claiin'as our invention:

1. In an indicator mechanism, the combination of a supporting memberhaving an opening therethrough, pressure indicator op erating mechanism,a housing therefor, a plate having a transversely projecting annularflange, means for securing the housing and plate to opposite sides ofthe supporting member, an indicator scale supported Within the flange onsaid plate, a threaded ring also supported on said plate, a crystalsupported in said ring, a spacing ring bearing against the scale and theinner face of the crystal,

and indicating means cooperating with said indicator scale andcont-rolled by sald-operatlng mechanism.

In an indicator mechanism, the comblnaticn of a panel having an openlngtherethrough, pressure indicator operating mechanism on one side ot thepanel, a pressure indicator on the other side of the panel ineluding aplate, means for securing themechanism and plate to latter in contactwith the panel, operating connections between said mechanism andindicator extending through the panel opening, an outwardly projectingflange on said plate, an indicator scaleon the flange, a spacing :ingengaging said scale, a plate of transparent material engaging thespacing ring, and a retaining ring in threaded engagement with saidflange and having shoulder bearing on said transparent plate.

@SCAR H. PIEPER. ALPHONSE F. PIEPER. Witnesses: R. V. STEWART, J. H.KnrNE.

each; other With the said plate within

